| Integrated energy system(IES)is one of the effective technologies to solve the problems of energy and environment,improve the efficiency of energy utilization and realize the sustainable development of energy.The overall optimization of equipment capacity and operation strategy in ies is the basis of efficient,economic and reliable operation of the system.How to carry out reasonable planning and design of IES is one of the problems urgently to be solved at this stage.Power to gas(P2G)technology improves the flexibility of multi energy system operation.Based on this,aiming at the current situation of the lack of research on the optimization of electric/thermal/gas integrated energy storage configuration in regional IES,this paper focuses on the optimization of electric/thermal/gas multi energy storage configuration in regional IES including new equipment P2G,and further studied the issue of regional IES capacity configuration optimi zation.The main contents of this paper are as follows:(1)A practical and effective general matrix modeling method for regional IES was proposed.Based on the energy hub(EH)model,the matrix expression describing the overall energy balance relationship of regional IES was established.Finally,it was verified that the proposed method can reduce iterative modeling time and improve efficiency through regional IES capacity optimization allocation problem.(2)A bi-level optimization model of regional IES electric/gas/heat storage configuration including P2G was constructed.Firstly,the user side energy substitution was considered to modify the load model.The influence of P2G on energy storage configuration and system operation was analyzed.Finally,a typical community IES off grid and on grid operation modes were simulated to verify the effectiveness of the bi-level optimization model.(3)A regional IES energy conversion equipment and energy storage system equipment selection and optimal capacity allocation model that takes into account multiple evaluation indexes was established,and the integrated demand response(IDR)was considered to improve the comprehensive load model.Similarly,taking a typical community IES as an example,it verified that the proposed method and model take into account the needs of system economy,comprehensive energy efficiency and sustainability while determining the regional IES equipment model and energy storage capacity. |
PDF Full Text Request